Submission #247329

#	Time	Username	Problem	Language	Result	Execution time	Memory
247329		dwsc	Lokahian Relics (FXCUP4_lokahia)	C++17	100 / 100	9 ms	844 KiB

lokahia

#include <bits/stdc++.h>
#include "lokahia.h"
using namespace std;
int p[210];
int visit[210][210];
int num[210];
int findset(int i){
    return p[i]==i?p[i]:p[i]=findset(p[i]);
}
int FindBase(int N){
    srand(3082);
	int counter = 0;
	for (int i = 0; i < N; i++) p[i] = i;
	int fail = 0;
	while (counter < 100){
        int a = rand()%N,b = rand()%N;
        if (fail > 100000) break;
        fail++;
        if (a == b) continue;
        if (visit[findset(a)][findset(b)]) continue;
        if (findset(a) == findset(b)) continue;
        fail = 0;
        counter++;
        int x = findset(a),y = findset(b);
        visit[x][y] = visit[y][x] = 1;
        int temp = CollectRelics(a,b);
        if (temp != -1) {
            for (int i = 0; i < N; i++){
                visit[temp][i] = visit[i][temp] = max(visit[temp][i],max(visit[x][i],visit[y][i]));
            }
            p[x] = temp;
            p[y] = temp;
        }
	}
    for (int i = 0; i < N; i++){
        num[findset(i)]++;
    }
    int maxi = 0,cur = -1;
    for (int i = 0; i < N; i++){
        if (num[i] >= maxi){
            maxi = num[i];
            cur = i;
        }
    }
    int tot = 0;
    for (int i = 0; i < N; i++){
        if (findset(i)== cur) tot++;
        else tot += CollectRelics(i,cur)!=-1;
    }
    if (tot > N/2) return cur;
    return -1;
}

• Subtask 1: 100 / 100